JSFiddle - React, Tailwind, and code Playground

JavaScript

var metres;
var centi;
mida = function (m, cm) 
{ 
	this.m=m;
	this.cm=cm;
	this.formam=function()
	{
		metres=parseInt(this.cm/100);
        return metres;
	}
	this.formacm=function()
	{
		centi=this.cm%100;
		return centi;
	}
} 
var mida1=new mida(1, 145);
alert("La mida1 te "+mida1.m+" metres i "+mida1.cm+" centimetres, aquestos valors formalitzats serien, "+mida1.formam()+" metres i "+mida1.formacm()+" centimetres.");